#!/usr/bin/python

# Copyright (c) 2015, Michael Scherer <misc@zarb.org>
# inspired by code of github.com/dandiker/
# GNU General Public License v3.0+ (see LICENSES/GPL-3.0-or-later.txt or https://www.gnu.org/licenses/gpl-3.0.txt)
# SPDX-License-Identifier: GPL-3.0-or-later

from __future__ import annotations

DOCUMENTATION = r"""
module: selinux_permissive
short_description: Change permissive domain in SELinux policy
description:
  - Add and remove a domain from the list of permissive domains.
extends_documentation_fragment:
  - community.general.attributes
attributes:
  check_mode:
    support: full
  diff_mode:
    support: none
options:
  domain:
    description:
      - The domain that is added or removed from the list of permissive domains.
    type: str
    required: true
    aliases: [name]
  permissive:
    description:
      - Indicate if the domain should or should not be set as permissive.
    type: bool
    required: true
  no_reload:
    description:
      - Disable reloading of the SELinux policy after making change to a domain's permissive setting.
      - The default is V(false), which causes policy to be reloaded when a domain changes state.
      - Reloading the policy does not work on older versions of the C(policycoreutils-python) library, for example in EL 6.".
    type: bool
    default: false
  store:
    description:
      - Name of the SELinux policy store to use.
    type: str
    default: ''
notes:
  - Requires a recent version of SELinux and C(policycoreutils-python) (EL 6 or newer).
requirements: [policycoreutils-python]
author:
  - Michael Scherer (@mscherer) <misc@zarb.org>
"""

EXAMPLES = r"""
- name: Change the httpd_t domain to permissive
  community.general.selinux_permissive:
    name: httpd_t
    permissive: true
"""

import traceback

HAVE_SEOBJECT = False
SEOBJECT_IMP_ERR = None
try:
    import seobject

    HAVE_SEOBJECT = True
except ImportError:
    SEOBJECT_IMP_ERR = traceback.format_exc()

from ansible.module_utils.basic import AnsibleModule, missing_required_lib


def main():
    module = AnsibleModule(
        argument_spec=dict(
            domain=dict(type="str", required=True, aliases=["name"]),
            store=dict(type="str", default=""),
            permissive=dict(type="bool", required=True),
            no_reload=dict(type="bool", default=False),
        ),
        supports_check_mode=True,
    )

    # global vars
    changed = False
    store = module.params["store"]
    permissive = module.params["permissive"]
    domain = module.params["domain"]
    no_reload = module.params["no_reload"]

    if not HAVE_SEOBJECT:
        module.fail_json(changed=False, msg=missing_required_lib("policycoreutils-python"), exception=SEOBJECT_IMP_ERR)

    try:
        permissive_domains = seobject.permissiveRecords(store)
    except ValueError as e:
        module.fail_json(domain=domain, msg=f"{e}", exception=traceback.format_exc())

    # not supported on EL 6
    if "set_reload" in dir(permissive_domains):
        permissive_domains.set_reload(not no_reload)

    try:
        all_domains = permissive_domains.get_all()
    except ValueError as e:
        module.fail_json(domain=domain, msg=f"{e}", exception=traceback.format_exc())

    if permissive:
        if domain not in all_domains:
            if not module.check_mode:
                try:
                    permissive_domains.add(domain)
                except ValueError as e:
                    module.fail_json(domain=domain, msg=f"{e}", exception=traceback.format_exc())
            changed = True
    else:
        if domain in all_domains:
            if not module.check_mode:
                try:
                    permissive_domains.delete(domain)
                except ValueError as e:
                    module.fail_json(domain=domain, msg=f"{e}", exception=traceback.format_exc())
            changed = True

    module.exit_json(changed=changed, store=store, permissive=permissive, domain=domain)


if __name__ == "__main__":
    main()
